It's a fine line between safety and terror. Meet the rulers.
Tense drama series about the different challenges faced by the British Security Service as they work against the clock to safeguard the nation. The title is a popular colloquialism for spies, and the series follows the work of a group of MI5 officers based at the service's Thames House headquarters, in a highly secure suite of offices known as The Grid.
Sep 12, 2005
When a devastating bomb explodes in central London, causing multiple deaths, a terrorist group with a hatred for human life claim responsibility. With their leader facing extradition, the bombers announce that crippling attacks will be launched at ten hour intervals until he is released.
Sep 13, 2005
Zafar and Adam race against the clock to uncover the latest bomb. As a new ultimatum is issued and Tash mysteriously disapears, the team is forced to deal with the possibility of a mole within their own organisation.
Sep 22, 2005
Far-right political party The British Way is threatening democracy so Adam and Fiona go undercover to infiltrate and destroy its campaign.
Sep 29, 2005
Adam infiltrates a truck carrying illegal immigrants across Europe in order to stop a would-be terrorist.
Oct 6, 2005
A neo-conservative group murder an ex-minister to cover up his past and then they hunt down the journalist who is threatening to blow the story and is under MI5 protection.
Oct 13, 2005
MI5 suspect a terrorist is planning an attack from his prison cell. Guest stars Jimi Mistry.
Oct 20, 2005
The Syrian foreign minister tries to establish subversive contacts with MI5 at the opening of a cultural centre in London. Fiona is desperate to lead this mission and must confront her Syrian past.
Oct 27, 2005
An old British traitor is called in to infiltrate a Russian firm suspected of stealing secrets from GCHQ.
Nov 3, 2005
Harry upsets the CIA by stopping an extradition to the USA.
Nov 10, 2005
A former officer is convinced that MI5 killed Princess Diana and is determined to force the team to prove it.
